A new method for qualitative and quantitative analysis of Rhodobryum giganteum by using the nonlinear oscillating chemical was established for improving the quality control standard of R. giganteum. Its potential(E)/time(t) curve was recorded by electrochemical workstation in the oscillation reaction system of BrO~-_3-Ce(SO_4)_2-H_2SO_4-malonic acid/tartaric acid. The nonlinear oscillating chemical fingerprints were investigated for repeatability, and it was found that the RSD values of the four characteristic parameters of R. giganteum were less than 4.1%, indicating a good repeatability and high precision of this experiment. After optimizing the experimental parameters such as particle size, rotation speed and temperature, a new method based on nonlinear oscillating chemical was used for qualitative and quantitative analysis of R. giganteum. The results showed that there was a good linear relationship between the induction time/the period of oscillation and the dosage of herbs(0.1-1.1 g), with the relative coefficients of 0.978 and 0.975, respectively. Besides, the highest potential showed a nonlinear relationship with the dosage of herbs, with the relative coefficient of 0.999. This method was also used to discriminate the R. giganteum and R. roseum. They were similar in appearance, but their fingerprints were quite different. Independent sample t test results showed that there were significant differences in the oscillation time, the maximum amplitude and the induction time, providing a basis for the identification of the basic sources of Herba Rhodobryi Rasei.
Quality Control

In this study, we attempted to improve hospital food delivery service quality and customer satisfaction by using FMEA (Failure Mode and Effect Analysis), which is applied to the quality control of products in manufacturing plants. Subjective food delivery service quality improvement was judged based on a 5-point likert scale. Traditional FMEA uses an RPN (Risk priority number) to evaluate the risk level of a component or process. The RPN index was determined by calculating the product of severity, occurrence, and detection indexes. In our results, total RPN value (P<0.01) significantly decreased after FMEA introduction, whereas customer satisfaction (P<0.001) and food delivery service quality (P<0.001) significantly increased. Specifically, foodservice errors (P<0.01) and loss cost (P<0.01) were significantly improved by FMEA introduction. Taken together, we suggest that FMEA reduces critical activities and errors in foodservice delivery caused by simple priority selection.
Quality Control ; Quality Improvement

Quality control survey was done on the plasma triglyceride determination of six laboratories and following results were obtained. 1) Coefficients of variation were less than 5% in 3 laboratories and over 10% in one laboratory. 2) High interlaboratory variation was inferred from the mean values ranging from 104.0~136. 4mg% (sample A) with enzyme method and 44.7~65.3 (Sample B) with acetylaceton method. 3) Establishment of normal plasma triglyceride level in Koreans and supervised quality control by the authority seemed to be urgent.
Plasma ; Quality Control ; Triglycerides*

Two trials of external quality assessment were performed in 2003. Thirteen test items of immunoassay with ten control materials were surveyed. The response rate of external quality assessment for Immunoassay Subcommittee were 93.8% and 92.8%. Ten control materials were consisted of 8 home-made pooled sera and 2 commercial control sera. The results are summarized as follows. 1. Laboratories participating in external quality control program of immunoassay were 259 laboratories and the response rate were 93.8% and 92.8% in 2003. 2. Chemiluminiscence immunoassay autoanalyzer was now widely introduced comparing to previous years and now it is the most popular analyzer in the field of immunoassay testing. 3. Still some test items show big variations of the test results of the same control material according to autoanalyzer. Generally the quality of the participating laboratories seems to be thought being improved. And in the following years, new planning of the statistic analysis and some standardization protocols could be introduced.
Immunoassay* ; Korea* ; Quality Control

Introduction: Quality control in medical laboratory includes internal quality control and external quality control is very necessary for the quality management of medical laboratory tests. However, many laboratories for different reasons have not carried out quality control, its benefits, as well as inadequately evaluated affected risks of laboratory test quality. \r\n', u'Objectives: Two objectives are set for the research. First, to evaluate the quality of blood biochemical tests in some of the provinces, districts and private laboratories in the North of Vietnam. Second, factors that affect the quality of the medical laboratory tests are also examined. \r\n', u'Subjects and method: In this study, human control serum of Biorad is sent as ordinary blood samples to the 6 provincial, 12 district and 10 private laboratories to analyze some normal blood biomedical indexes. We also collected the necessary information on staff, equipments, and chemicals\u2026of the laboratories.\r\n', u'Results: There are five main findings in the areas of (1) general information about the laboratories, (2) laboratory test results of blood biochemical indexes with true value at the normal level, (3) laboratory test results of blood biochemical indexes with true value at the pathological level (level 2), (4) the accuracy of laboratory test results based on the blood test sample level 1, (5) the accuracy of laboratory test results based on the blood test sample level 2. In general, the first results of analyzed biomedical indexes are very different by statistical calculation between laboratories. \r\n', u'Conclusion: The research results indicated that the quality of analyzed biomedical indexes in some laboratories is not ensured. It is necessary to find the reasons and the ways to resolve the problem. \r\n', u'
Quality control ; Clinical test

A quality of domestic drugs is not high, which is not enough capacity to compete with market of Vietnam and difficult integrated to market of other countries. It should strengthen to guarantee of drug quality, supply and price for people
Pharmaceutical Preparations ; Quality Control

Iodosoja is an iodine containing organic compound to treat the goiter. This study aimed at setting up the method of quality control of iodosoja. The method involved the qualitative analysis (physical and chemical properties), quantitative analysis (quantification of free iodine, and total organic iodine as chemical method and spectrometry) and determination of stability (selflife) of iodosoja
Quality Control ; Iodine

This study introduced the quality control network in laboratories of Vietnam Inter’l hospital, including internal and external quality control. The values of samples were at allowed limitations. The values of SD, CV what a high preciseness when comparing with these in other Inter’l Laboratories
Quality Control ; Laboratories

The project was carried out to determine total fluoride on Colgate dentifrices. 10 samples of Colgate Dentifrices markerted in Vietnam were analysed. The total fluoride content was determined by measurement of solution voltage with fluoride Ionic Selective Electrode. The results of research showed that the total fluoride content on the above mentioned detifrices is high, stable and is not lower than level of 1,000-1,200 ppm.
Colgate Total ; Quality Control

The speed of development in antibiotics appears have not kept pace with that of development in antibiotic-resistant bacteria. The appropriate antibiotic regimens will cure diseases and prevent the antibiotic-resistant bacteria from development. 4 antibiotic regimens were used randomly, included 1) penicillin alone; 2) penicillin combined with gentamycine, 3) cephalosporine; and 4) chloramphenicol. Regimens 2 and 3 provided good effect in treatment of severe and very severe pneumonia caused by antibiotic-resistant bacteria in under 5-year children (the rate of cure is 66.7% and 72%, respectively). Regimens 1 and 4 provided less effect (30.8% and 29%, respectively
Water ; Quality Control